PT79313B - LOGIC CIRCUIT WITH THRESHOLD AND INTRINSIC SECURITY - Google Patents

LOGIC CIRCUIT WITH THRESHOLD AND INTRINSIC SECURITY

Info

Publication number
PT79313B
PT79313B PT79313A PT7931384A PT79313B PT 79313 B PT79313 B PT 79313B PT 79313 A PT79313 A PT 79313A PT 7931384 A PT7931384 A PT 7931384A PT 79313 B PT79313 B PT 79313B
Authority
PT
Portugal
Prior art keywords
threshold
logic circuit
intrinsic security
intrinsic
security
Prior art date
Application number
PT79313A
Other languages
French (fr)
Portuguese (pt)
Other versions
PT79313A (en
Original Assignee
Jeumont Schneider
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jeumont Schneider filed Critical Jeumont Schneider
Publication of PT79313A publication Critical patent/PT79313A/en
Publication of PT79313B publication Critical patent/PT79313B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/007—Fail-safe circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Logic Circuits (AREA)
  • Manipulation Of Pulses (AREA)
  • Amplifiers (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Electronic Switches (AREA)
PT79313A 1983-10-13 1984-10-03 LOGIC CIRCUIT WITH THRESHOLD AND INTRINSIC SECURITY PT79313B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8316331A FR2553605B1 (en) 1983-10-13 1983-10-13 THRESHOLD AND INTRINSICALLY SECURITY LOGIC CIRCUIT

Publications (2)

Publication Number Publication Date
PT79313A PT79313A (en) 1984-11-01
PT79313B true PT79313B (en) 1986-08-19

Family

ID=9293114

Family Applications (1)

Application Number Title Priority Date Filing Date
PT79313A PT79313B (en) 1983-10-13 1984-10-03 LOGIC CIRCUIT WITH THRESHOLD AND INTRINSIC SECURITY

Country Status (11)

Country Link
US (1) US4677316A (en)
EP (1) EP0138706B1 (en)
BR (1) BR8405080A (en)
CA (1) CA1213006A (en)
DE (1) DE3480454D1 (en)
ES (1) ES8506414A1 (en)
FR (1) FR2553605B1 (en)
IN (1) IN163002B (en)
MX (1) MX156832A (en)
PT (1) PT79313B (en)
ZA (1) ZA847983B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9606174D0 (en) * 1996-03-23 1996-05-29 Atomic Energy Authority Uk Signal monitor
RU2153765C2 (en) * 1997-12-24 2000-07-27 Московский государственный университет путей сообщения Control circuit
AU780228B2 (en) * 1999-12-30 2005-03-10 Ge Transportation Systems Global Signaling, Llc Vital "and" gate apparatus and method
FR2870652B1 (en) * 2004-05-24 2007-08-03 Scle Soc De Construction De Li SECURITY DEVICE REPRODUCING A LOGIC FUNCTION, IN PARTICULAR A "AND" SECURITY

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL274016A (en) * 1961-01-26
US3430066A (en) * 1965-08-31 1969-02-25 Westinghouse Air Brake Co Unit gain fail safe "and" logic circuit
GB1242540A (en) * 1967-12-21 1971-08-11 Westinghouse Brake & Signal Static gating circuits
US3995173A (en) * 1974-05-30 1976-11-30 General Signal Corporation Solid state fail-safe logic system
US4130764A (en) * 1977-07-27 1978-12-19 Westinghouse Air Brake Company Fail-safe or logic circuit
US4125784A (en) * 1977-07-27 1978-11-14 Westinghouse Air Brake Company Fail-safe or gate
FR2510845A1 (en) * 1981-07-31 1983-02-04 Omera Segid LOGIC SAFETY CIRCUITS USED IN PARTICULAR IN RAILWAY SIGNALING AND ELECTRONIC PROCESSING BOX, OR AUTOMATION INCORPORATING AT LEAST ONE OF THESE CIRCUITS
JPS58188923A (en) * 1982-04-28 1983-11-04 Nippon Denso Co Ltd Period signal detecting circuit

Also Published As

Publication number Publication date
BR8405080A (en) 1985-08-20
PT79313A (en) 1984-11-01
EP0138706A3 (en) 1985-06-12
FR2553605B1 (en) 1988-12-02
IN163002B (en) 1988-07-30
ZA847983B (en) 1985-05-29
DE3480454D1 (en) 1989-12-14
CA1213006A (en) 1986-10-21
EP0138706B1 (en) 1989-11-08
US4677316A (en) 1987-06-30
EP0138706A2 (en) 1985-04-24
ES536626A0 (en) 1985-07-16
ES8506414A1 (en) 1985-07-16
FR2553605A1 (en) 1985-04-19
MX156832A (en) 1988-10-05

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